tricangular_current_loop - 180 cos ) 60 tan( 4 cos ) 60...

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Triangular Current Loop Given: F i n d : cm d 8 ? II I W A i 25 . 0 T B 3 . 1 A wire formed in the shape of an equilateral triangle of side d = 8 cm, carries current i = 0.25 A. This loop is located in a region of space that contains a constant magnetic field of magnitude B = 1.3 T, aligned with the negative z-axis as shown in the diagram above. What is W I to II , the work you would have to do to rotate the coil 180° from Position I to Position II? (Note, the coil is rotated out of the plane of the page, not simply spun in the plane) Solutions a.) To find we can use the following formula: II I W 1 2 U U U W II I  d W II I  cos cos iAB B B U 60 tan 4 ) 5 . 0 ( 60 tan 2 2 d d d A cos ) 60 tan( 4 2 B d i U
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Position one: used right hand rule to find direction of 180 Position two: used right hand rule to find direction of 0
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Unformatted text preview: 180 cos ) 60 tan( 4 cos ) 60 tan( 4 2 2 1 2 B d i B d i U U W II I 2 ) 60 tan( ) 60 tan( 4 2 ) 60 tan( 4 ) 60 tan( 4 2 2 2 2 B id B d i B d i B d i W II I 2 ) 60 tan( 2 B id W II I Second way: d W II I d iAB d B iA d B d W II I sin ) 2 ( sin sin sin 2 1 iAB d iAB d iAB d iAB W position position II I 2 ) 60 tan( 4 60 tan 2 ) 2 ( 2 2 B id B d i iAB W II I 2 ) 60 tan( 2 B id W II I...
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This note was uploaded on 01/26/2012 for the course PHYSICS 211 taught by Professor Selig during the Fall '10 term at University of Illinois, Urbana Champaign.

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tricangular_current_loop - 180 cos ) 60 tan( 4 cos ) 60...

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